Olympus E-450 vs Pentax K-S1

Following is a comprehensive comparison of the Olympus E-450 and Pentax K-S1, former is a Entry-Level DSLR while the latter is a Advanced DSLR by manufacturers Olympus and Pentax. There exists a sizable gap between the resolutions of the E-450 (10MP) and K-S1 (20MP) and the E-450 (Four Thirds) and K-S1 (APS-C) have different sensor sizing.

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The E-450 was released 6 years earlier than the K-S1 which is quite a significant difference as far as technology is concerned. Both of these cameras have different body design with the Olympus E-450 being a Compact SLR camera and the Pentax K-S1 being a Mid-size SLR camera.

Before getting right into a in-depth comparison, here is a quick summation of how the E-450 matches up vs the K-S1 in relation to portability, imaging, features and an overall score.

This is a preview of the gallery images for Olympus E-450 & Pentax K-S1. The complete galleries are available at Olympus E-450 Gallery & Pentax K-S1 Gallery.

For those who are looking to carry around your camera, you have to consider its weight and proportions. The Olympus E-450 has got exterior dimensions of 130mm x 91mm x 53mm (5.1" x 3.6" x 2.1") accompanied by a weight of 426 grams (0.94 lbs) whilst the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") having a weight of 558 grams (1.23 lbs).

Check the Olympus E-450 and Pentax K-S1 in our completely new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ based on the lens you are working with during that time. Here is a front view dimension comparison of the E-450 compared to the K-S1.

Looking at dimensions and weight, the portability grade of the E-450 and K-S1 is 77 and 69 respectively.

Quite often, it's hard to picture the gap between sensor sizes just by checking a spec sheet. The image below may give you a much better sense of the sensor dimensions in the E-450 and K-S1.

Clearly, the 2 cameras provide different resolutions and different sensor sizes. The E-450 due to its tinier sensor is going to make achieving shallow depth of field tougher and the Pentax K-S1 will resolve more detail as a result of its extra 10 Megapixels. Higher resolution will also allow you to crop shots more aggressively. The more aged E-450 is going to be disadvantaged with regard to sensor innovation.